package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.stereotype.Service;

import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
    @Autowired
    AttrAttrgroupRelationDao relationDao;
    @Autowired
    AttrGroupDao attrGroupDao;
    @Autowired
    CategoryDao categoryDao;
    @Autowired
    CategoryService categoryService;
    @Autowired
    AttrDao attrDao;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        //保存基本的数据
        this.save(attrEntity);
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId()!=null) {
            //保存关联的表的数据
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(attrAttrgroupRelationEntity);
        }


    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long cateLogId, String type) {
        //区分是查询销售还是基本
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().
                eq("attr_type", "base".equals(type)
                        ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()
                        : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        //当 cateLogId == 0 时 是查询所有
        if (cateLogId != 0) {
            wrapper.eq("catelog_id", cateLogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((wrapper1) -> {
                wrapper1.eq("attr_id", key).or().like("attr_name", key);
            });

        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params), wrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            //根据属性 id 查询关系表
            AttrAttrgroupRelationEntity attr_id = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().
                    eq("attr_id", attrEntity.getAttrId()));
            //1、设置分类和分组的名字
            //如果能查到说明属性有分组，则查分组的名
//            if(attr_id == null) System.out.println("----------------------------------------------------");
            if ("base".equals(type)) {
                if (attr_id != null && attr_id.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attr_id.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }


            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }

            return attrRespVo;
        }).collect(Collectors.toList());
        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    @Cacheable(value = "attr",key = "'attrinfo:'+#root.args[0]")
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo attrRespVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, attrRespVo);

        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //根据属性 id 查询关系表
            AttrAttrgroupRelationEntity attr_id = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().
                    eq("attr_id", attrEntity.getAttrId()));
            //1、设置分类和分组的名字
            //如果能查到说明属性有分组，则查分组的名
            if (attr_id != null) {
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attr_id.getAttrGroupId());
                attrRespVo.setAttrGroupId(attrGroupEntity.getAttrGroupId());
                attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }
        }


        //2、设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        attrRespVo.setCatelogPath(catelogPath);

        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            attrRespVo.setCatelogName(categoryEntity.getName());
        }
//        attrRespVo.setCatelogPath();
//        attrRespVo.setGroupName();
        return attrRespVo;
    }

    @Override
    public void updateAttr(AttrVo attrVo) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attrVo, attrEntity);
        this.updateById(attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //1、修改分组关联
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attrVo.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attrVo.getAttrId());
            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrAttrgroupRelationEntity.getAttrId()));
            if (count == 0) {
                relationDao.insert(attrAttrgroupRelationEntity);
            } else {
                relationDao.update(attrAttrgroupRelationEntity, new QueryWrapper<AttrAttrgroupRelationEntity>().
                        eq("attr_id", attrAttrgroupRelationEntity.getAttrId()));
            }
        }


    }

    /**
     * 根据分组id 查找关联的所有属性
     * @param attrGroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrGroupId) {
        List<AttrEntity> entityList = new ArrayList<>();

        List<AttrAttrgroupRelationEntity> attr_group_id = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().
                eq("attr_group_id", attrGroupId));

        for (AttrAttrgroupRelationEntity relationEntity : attr_group_id) {
            AttrEntity attrEntity = attrDao.selectById(relationEntity.getAttrId());
            entityList.add(attrEntity);
        }
        return entityList;

        /*List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        if(attrIds == null || attrIds.size() == 0){
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
        return (List<AttrEntity>) attrEntities;*/
    }

    /**
     * 删除属性与分组的关联关系
     * @param vos
     */
    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        /*for (int i = 0; i < vos.length; i++) {
            attrAttrgroupRelationDao.delete(new QueryWrapper<AttrAttrgroupRelationEntity>().
                    eq("attr_group_id", vos[i].getAttrGroupId()));
        }*/
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrId(item.getAttrId());
            relationEntity.setAttrGroupId(item.getAttrGroupId());
            return relationEntity;
        }).collect(Collectors.toList());

        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取属性分组没有关联的其他属性
     * @param params
     * @param attrGroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrGroupId) {
        /*AttrGroupEntity attrGroupEntity = attrGroupDao.selectOne(new QueryWrapper<AttrGroupEntity>().
                eq("attr_group_id", attrGroupId));
        List<AttrAttrgroupRelationEntity> relationList = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().
                eq("attr_group_id", attrGroupId));
        List<Long> relationAttrId = relationList.stream().map((item) -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        List<AttrEntity> entities = attrDao.selectList(new QueryWrapper<AttrEntity>().
                eq("catelog_id", attrGroupEntity.getCatelogId()));

        List<Object> collect = entities.stream().map((item) -> {
            if (relationAttrId.contains(item.getAttrId())) {
                return null;
            }
            return item;
        }).collect(Collectors.toList());*/
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrGroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;


//        return null;
    }

    /**
     * 根据商品查出来的属性id，查出attr searchcalue 为1 的 id
     * @param attrIds
     * @return
     */
    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return baseMapper.selectSearchAttrIds(attrIds);
    }


}